METREL MD 9020 User Manual

MD 9020 Electrical & Electronic DMM Operation
10
Diode test, Capacitance functions
Defaults at . Press
SELECT
button momentarily 2 times to select Diode test
function. Normal forward voltage drop (forward biased) for a good silicon diode is
between 0.400V to 0.900V. A reading higher than that indicates a leaky diode
(defective). A zero reading indicates a shorted diode (defective). An OL indicates an
open diode (defective). Reverse the test leads connections (reverse biased) across the
diode. The digital display shows OL if the diode is good. Any other readings indicate the
diode is resistive or shorted (defective).
Defaults at . Press
SELECT
button momentarily 3 times to select Capacitance
function. Relative zero mode can be used to zero out the parasitic capacitance of the
leads and the internal protection circuitry of the meter when measuring low capacitance
in the order of Pico Farad (pF).
CAUTION
Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load

A, mA, and A Current functions
Default at
DC
. Press
SELECT
button momentarily to select
AC.

METREL MD 9020 Specifications

General

Brand	METREL
Model	MD 9020
Category	Multimeter
Language	English